CN1132433A - 带降噪电路的电话电池供电电路 - Google Patents

带降噪电路的电话电池供电电路 Download PDF

Info

Publication number
CN1132433A
CN1132433A CN95117363A CN95117363A CN1132433A CN 1132433 A CN1132433 A CN 1132433A CN 95117363 A CN95117363 A CN 95117363A CN 95117363 A CN95117363 A CN 95117363A CN 1132433 A CN1132433 A CN 1132433A
Authority
CN
China
Prior art keywords
signal
harmful
tip
unwanted signals
amplitude
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN95117363A
Other languages
English (en)
Chinese (zh)
Inventor
伊恩·安德鲁·肖尔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AT&T Corp filed Critical AT&T Corp
Publication of CN1132433A publication Critical patent/CN1132433A/zh
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H04M19/005—Feeding arrangements without the use of line transformers

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Noise Elimination (AREA)
CN95117363A 1994-09-28 1995-09-25 带降噪电路的电话电池供电电路 Pending CN1132433A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US314101 1994-09-28
US08/314,101 US5528688A (en) 1994-09-28 1994-09-28 Telephone battery feed circuit including noise reduction circuit

Publications (1)

Publication Number Publication Date
CN1132433A true CN1132433A (zh) 1996-10-02

Family

ID=23218562

Family Applications (1)

Application Number Title Priority Date Filing Date
CN95117363A Pending CN1132433A (zh) 1994-09-28 1995-09-25 带降噪电路的电话电池供电电路

Country Status (3)

Country Link
US (1) US5528688A (fr)
CN (1) CN1132433A (fr)
CA (1) CA2155999C (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112653435A (zh) * 2020-12-11 2021-04-13 华东师范大学 一种基于二极管的宽频射频开关及边沿优化方法

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5659610A (en) * 1994-09-28 1997-08-19 Lucent Technologies Inc. Battery feed circuit
US6144659A (en) * 1996-12-19 2000-11-07 Lucent Technologies Inc. Telecommunication equipment support of high speed data services
US5854550A (en) * 1997-11-06 1998-12-29 Lucent Technologies Inc. Transformerless digital-line battery feed circuit
US6069950A (en) * 1997-11-06 2000-05-30 Lucent Technologies Inc. Dual-limit current-limiting battery-feed circuit for a digital line
US5898296A (en) * 1998-02-17 1999-04-27 Lucent Technologies Inc. Isolation regulator
US7200377B2 (en) * 2001-06-06 2007-04-03 Visteon Corporation Method and system for multi-channel RF digitization with analog selectivity
US7050577B2 (en) * 2002-03-06 2006-05-23 Intersil Americas Inc. Programmable subscriber line circuit partitioned into high voltage interface and digital control subsections
US7003103B2 (en) * 2002-03-06 2006-02-21 Intersil Americas Inc. Mode-dependent, multiple bias-driven battery switch for subscriber line interface circuit
US7206405B2 (en) * 2002-03-06 2007-04-17 Intersil Americas Inc. Enhanced high voltage interface for partitioned subscriber line interface circuit
US6950514B2 (en) * 2002-03-06 2005-09-27 Intersil Americas Inc. Voltage reference filter for subscriber line interface circuit
KR100580248B1 (ko) * 2003-09-20 2006-05-16 삼성전자주식회사 서지 차단 장치
US9699542B2 (en) 2014-10-03 2017-07-04 Analog Devices Global Headset amplification circuit with error voltage suppression
WO2021226847A1 (fr) * 2020-05-12 2021-11-18 上海汽车集团股份有限公司 Circuit de communication bidirectionnelle isolée et procédé pour signal différentiel

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007335A (en) * 1975-11-12 1977-02-08 Bell Telephone Laboratories, Incorporated Telephone line battery feed circuit
NL7807531A (nl) * 1978-07-13 1980-01-15 Philips Nv Inrichting voor het toevoeren van een signaal aan een transmissielijn.
NL7903662A (nl) * 1979-05-10 1980-11-12 Philips Nv Lijncircuit.
US4476350A (en) * 1981-02-17 1984-10-09 Bell Telephone Laboratories, Incorporated Battery feed circuit
US4402039A (en) * 1981-09-03 1983-08-30 Bell Telephone Laboratories, Incorporated Telephone line circuit
US4419542A (en) * 1982-05-17 1983-12-06 Bell Telephone Laboratories, Incorporated Battery feed circuit
JPS59125157A (ja) * 1982-12-30 1984-07-19 Fujitsu Ltd 給電回路
US4612417A (en) * 1984-07-27 1986-09-16 At&T Bell Laboratories Electronic battery feed circuit for telephone systems
US4736415A (en) * 1985-07-05 1988-04-05 American Telephone And Telegraph Company Resistive line feed circuit
CA1258930A (fr) * 1986-12-24 1989-08-29 Reinhard Rosch Circuit d'alimentation de ligne a impedance active
US5337354A (en) * 1992-07-30 1994-08-09 Hubbell Incorporated Tip-ring voltage correction circuit
US5444777A (en) * 1993-12-28 1995-08-22 At&T Corp. Battery feed for telephone line cards

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112653435A (zh) * 2020-12-11 2021-04-13 华东师范大学 一种基于二极管的宽频射频开关及边沿优化方法

Also Published As

Publication number Publication date
CA2155999A1 (fr) 1996-03-29
CA2155999C (fr) 1998-07-07
US5528688A (en) 1996-06-18

Similar Documents

Publication Publication Date Title
CN1030675C (zh) 电力线通信终端及与其相联的接口电路
CN1132433A (zh) 带降噪电路的电话电池供电电路
US5734703A (en) Hybrid circuit and data communication apparatus
US4472608A (en) Subscriber line interface circuit
CN1025270C (zh) 线路接口电路
CA2032660A1 (fr) Circuit d'interface de ligne
GB1389560A (en) Active two-wire to four-wire coupling circuit
JPH0622340B2 (ja) 回線インタフェース装置
US4319093A (en) Transmission bridge for a subscriber set
US4961219A (en) Circuit for synthesizing an impedance across the tip and ring leads of a telephone line circuit
EP0455894B1 (fr) Synthèse d'impédance par boucle multiple utilisant des moyens de filtrage
US3993880A (en) Resistive battery feed for line circuits
GB2032733A (en) Transmission bridges
EP0163275B1 (fr) Circuit d'alimentation pour une ligne d'abonné
US20010033653A1 (en) Extended feedback circuit employing capacitive coupling and sampled data filters
KR900002740B1 (ko) 교환기용 급전회로
US6567521B1 (en) Subscriber loop interface circuitry having bifurcated common mode control
GB2087199A (en) Amplifiers for driving balanced lines
JPS5986951A (ja) 電話設備
GB2146873A (en) Telephone subscriber line circuit
JPS6230546B2 (fr)
JPS6126740B2 (fr)
JP2912388B2 (ja) 加入者回路
JP3494468B2 (ja) ハイブリッド回路及びこれを用いた装置
CA1065973A (fr) Adaptation d'impedance de lignes de transmission

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication